食品与机械2025，Vol.41Issue(6)：96-101,6.DOI:10.13652/j.spjx.1003.5788.2024.80945
混合方式和空燃比对燃气催化燃烧均匀性和效率的影响
Influence of mixing mode and air-fuel ratio on uniformity and efficiency of gas catalytic combustion
摘要
Abstract
[Objective]To solve the non-uniform heating temperature distribution and lower-than-expected combustion efficiency of catalytic infrared emitters.[Methods]This study proposes a research plan that focuses on improving the mixing mode of air and fuel gas and optimizing the mixing ratio(air-fuel ratio).After measuring the temperature of the emitter surface under different operating conditions using thermocouples,this study conducts optimization experiments with average surface temperature,maximum temperature,temperature standard deviation,and heating curves as indicators.[Results]Compared to intra-cavity mixing,extra-cavity pre-mixing can increase the average surface temperature of the emitter by about 50℃,increase the maximum temperature by approximately 16℃,and reduce the surface temperature standard deviation by around 17℃.At relatively low air-fuel ratios,it can also slightly shorten the heating time.Taking the situation where the liquefied petroleum gas is at 1.3 SLPM and the air-fuel ratio is 23.3,under intra-cavity mixing,the average temperature is 527.3℃and the maximum temperature is 527.3℃;However,under extra-cavity pre-mixing,the average temperature is 559.1℃and the maximum temperature is 647.4℃.[Conclusion]Extra-cavity pre-mixing is the optimal mixing mode for air and liquefied petroleum gas,with an optimal air-fuel ratio of 23.3.关键词
燃气/气体混合/空燃比/燃烧效率Key words
fuel gas/gas mixing/air-fuel ratio/combustion efficiency引用本文复制引用
徐润达,蒋群辉,马海乐..混合方式和空燃比对燃气催化燃烧均匀性和效率的影响[J].食品与机械,2025,41(6):96-101,6.基金项目
省部共建现代农业装备与技术协同创新中心项目(编号:XTCX1008) （编号:XTCX1008）
